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Journal of Materials Science
Erschienen in: Journal of Materials Science 23/2016

04.08.2016 | Original Paper

Facile microfluidic synthesis of copolymer hydrogel beads for the removal of heavy metal ions

verfasst von: Juan Li, Jingjing Tong, Xinhui Li, Zhanjun Yang, Yongcai Zhang, Guowang Diao

Erschienen in: Journal of Materials Science | Ausgabe 23/2016

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Abstract

A novel and recyclable poly(polyethylene glycol diacrylate/maleamic acid) (p(PEGDA/MALA)) copolymer hydrogel beads were for the first time synthesized through a microfluidic method and used for the removal of heavy mental ions from water. The monodisperse and size-controlled pregel droplets were firstly prepared by a microfluidic device and then polymerized to the hydrogel beads under UV irradiation. The synthesized p(PEGDA/MALA) hydrogel beads were characterized using various techniques and showed good adsorption property for Pb2+. The influencing factors on the adsorption process of Pb2+ were investigated in detail. The experiment results indicated that Pb2+ adsorption process was pH dependent, and agreed with the Langmuir monolayer model and pseudo-second-order equation. The adsorbing mechanism of copolymer hydrogel beads for Pb2+ mainly resulted from the electrostatic interaction and chelation action. The competitive adsorption experiment indicated that the affinity order in multicomponent adsorption was Pb2+>Cu2+>Cd2+. The well-designed p(PEGDA/MALA) copolymer hydrogel beads had excellent adsorption capacity and high recyclability and showed a promising application prospect in the decontamination of heavy metal ions in water.
Vorheriger Artikel Graphene oxide-filled multilayer coating to improve flame-retardant and smoke suppression properties of flexible polyurethane foam
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Metadaten
Titel
Facile microfluidic synthesis of copolymer hydrogel beads for the removal of heavy metal ions
verfasst von
Juan Li
Jingjing Tong
Xinhui Li
Zhanjun Yang
Yongcai Zhang
Guowang Diao
Publikationsdatum
04.08.2016
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 23/2016
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-016-0258-0

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